"The Interoperability Continuum outlines critical elements for the planning and implementation of successful public safety and service agencies' communications and interoperability solutions. These elements include governance, standard operating procedures, technology, training and exercises, and usage of interoperable communications. To drive progress along the five elements of the continuum and improve interoperability, public safety and service agency practitioners should observe the following principles: (1) Gain leadership commitment from all public safety and services agencies. (2) Foster collaboration across all public safety and services agencies for planning and implementation. (3) Work with policy makers to gain leadership commitment and resource support for interoperability. (4) Plan and budget for ongoing updates to systems, procedures, and documentation. (5) Use interoperability solutions on a regular basis". (DHS, TCL, 2007, p. 39)